In a new image from NASA’s James Webb Space Telescope, a galaxy named for its resemblance to a broad-brimmed Mexican hat appears more like an archery target. In Webb’s mid-infrared view of the ...
Miles of air cover Earth. The boundary between Earth's atmosphere and outer space, the Kármán line, is about 62 miles (100 kilometers) above the planet's surface. However, about 99.9% of the mass of ...